Method and means for projecting colored images



M. ASSAEL 1,963,110 METHOD AND MEANS FOR PROJECTING COLORED IMAGES June 19, 1934.

Filed May 6, 1932 FEW m W5? WWW Patented June 19, 1034 7 1,963,110

METHOD MEANS FOR PROJECTING COLORED'IMAGES Maurice Assael, New York, N. Y., assignor to Multi-Color. Arts, Inc., New York, N. Y., a corporation of New York Application May 6, 1932, Serial No. 609,625 3 Claims. (Cl. 88-24) This invention refers to a method and means lens surface with a colored translucent subi'or projecting colored images, and relates more stance, or by adding a colored pigment to the subparticularly to a method and means for projectstance which is used in cementingthe surfaces ing on a screen images of a color other than black of the lenses one against the other. In addition 5 or white, for instance, for colored moving pic- I use a bulb of light-colored glass forthe lamp-o0 tures. of theprojection apparatus or a light-colored An object of this invention isto provide cheap, light condenser for electrical arc light. Finally, simple and eflicient means for reproducing 001- I provide a colored projecting mirror by making ored images on a screen. it of colored glass, or by any other means.

Another object is to provide an inexpensive and In other words, I provide means for projecting as simple method of projecting on'a screen images light-colored images comprising four colored arof bright and effective coloring. ticles, these four articles being the film or the A further object is to project on a screen an plate, the objective or a part of the same, the image, parts of which are brightly and effectivebulb of the projector lamp orthe light condenser ly colored, while other parts have practically no and the projecting mirror; each of these four 70 coloring whatsoever. colored articles may be of the same color or each It has been found that in order to produce a of the same combination of different colors. Oh well colored picture the rays of light falling upon the other hand, one or more of these colored ara screen must be as bright and as clear as possiticles may be of a diilerent color than the rest, I

ble; it is quite dimcult, however, to obtain this provided that the coloring is a very light one; for 76 result by placing a colored photographic plate or instance, one of the articles may be pale rose, film in the path of a white ray of light. If a while another article may be pale pink. If these lightly colored film or plate is placed in the path articles are of different light colors, at least some of a beam of white light, light rays of other col-- of them should comprise many colors in the same 26 ors than the desired ones pass through said plate or a different combination than the colors of the 80 or film, so that the picture projected on a screen other articles.

appears practically white. On the other hand, In some cases it may be sufficient to use only should the plate or film be of a deeper coloring, two or three colored articles, the remaining arthe amount of light passing through it is not sufticle, or articles, being transparent to all rays 30 ficient to produce a clearly defined and bright of light.

picture on the screen. The light is diffused so I prefer to use a plate or film, which has been that the picture appears diniand misty, and the colored during the preparation of the cellulosic gray parts of the film appear to have just as much mass or the basic transparent material before said coloring as the light parts. mass or basic material has been coated with the I have found that this drawback can be elimisensitized layer, and before the picture has been 90 nated by a partial absorption of some of the light reproduced in said sensitized layer.

rays and/or by a combination of other light rays While pictures of any desired color or colors during their passage through the projection apmay be produced by my method, I have found that paratus. In order to preserve the brightness of it is particularly effective for cinematographic the picture and to eliminate as much loss as posclose-ups, wherein the heads and the hands of 96 sible, I dispense with all supplementary devices, the artists are shown in the natural flesh color. employing instead the usual parts of an ordinary It is essential in this case that the film, the projection apparatus with this exception, that lens, the lamp and the mirror be of a light flesh some of said parts are made of glass or other color in order to produce a good picture. The

translucmt substance having the desired lighthead and the hands of an artist will then be ef- 10o coloring. A particular advantage is gained by fectively and brilliantly colored, while the gray the use of glass, since his then possible to mainand shadowy parts of the picture 'will have practain high temperatures within the projection tically no coloring whatsoever.

apparatus without affecting the coloring of said The coloring substances used for coloring the parts, lamp, the lens and other parts of the projecting 1.12 5

According to my invention a light-colored film apparatus must consist of materials that can is used in a'projection apparatus provided with a withstand the temperature of several hundred light-colored objective. This is accomplished by degrees while the apparatus is in operation. the use of lenses, some or all of which are made The-invention will appear. more clearly from 5 of light-colored glass, or by covering at least one the following detailed descriptionwhen taken in no connection with the accompanying drawing showing a preferred embodiment of the inventive idea.

The drawing shows diagrammatically a projecting apparatus in vertical section.

In the drawing the casing 1 of the projecting apparatus contains an" objective 2 consisting of two lenses 3 and 4. The lens 3 consists of two parts glued together by a glue 5, which is slightly colored in one or many colors, for instance, very light flesh-color. The glue 8 used for glueing together the two parts of the lens 4 is slightly colored in the same orany other color or colors. A projecting mirror 6 and a source of light '7 are supported within the casing 1. The light condenser, or the bulb 7, is made entirely of slightly colored glass, or may be constructed in any other way that will give a colored lighting effect. The surface of the mirror 6 is provided with a coating 9 which may be of a very light flesh color, or any other color or colors. A colored film 10 wound on a reel 11 passes over guide rollers 12, 13, 14, 15 and 16 and is wound upon a reel 17.

The effect upon the screen of rays of light 18 that have already passed through the colored lamp 7, mirror 6, film 10 and lenses 3 and 4 is one of brilliant and natural colors. Those portions of the picture which were black remain black, those which were white remain practically white, those which were shadowy are rendered even more effective, and the colored portions assume their color combinations in accordance with the desired colored rays produced in the projection apparatus.

What is claimed is:

1. A method of projecting colored images, comprising providing a lightly colored ray of light, reflecting said ray of light by a mirror of the same light color, passing said ray of light through a translucent film of the same light color, and then passing said ray of light through an objective, a part at least of said objective being of the same light color.

2. Means for projecting colored images, comprising in combination, means for producing a ray of light, a projecting mirror of a light color, a translucent film of the same light color situated in the path of the projected ray of light. and an objective, a part at least of said objective being of the same light color.

3. Means for projecting colored images. comprising in combination, a lamp having a bulb of predetermined colors, a projecting mirror having a plurality of colors, a translucent colored film situated in the path of the projected ray of light, and a colored objective situated in the path of the projected ray of light.

MAURICE ASSAEL. 

